Ports to connect on The Attendant: BUS1 – BUS4 or Heater H1 – H5
Ports to connect on The Attendant Mini: BUS1 – BUS2 or Heater H1 – H2
These devices should only be powered directly from the power center or breaker panel. Do not run electricity through a relay as The Attendant will control the device to turn on/off by using the communication cable.
Overview
The Jandy JXi Series heaters can be controlled by The Attendant using either a Serial RS-485(BUS) connection (recommended) or a Dry-Contact(Heater Port). Both methods allow The Attendant to start and stop the heater.
Only RS-485(BUS) provides full digital communication and real-time status.
Serial RS-485(BUS) Connection (Recommended)
| Attendant BUS Port | Jandy AquaLink RS Block |
|---|---|
| D- | Yellow |
| D+ | Black |
Wiring Instructions
- Turn off power to the heater.
- Locate the RS-485 (AquaLink RS) red terminal block inside the heater.
- Identify the yellow and black RS-485 ports.
- Do not use the red or green terminals.
- Connect the yellow wire → D- on the chosen BUS port of The Attendant.
- Connect the black wire → D+ on the chosen BUS port of The Attendant.
- Tug test all conductors to ensure they are secure.
- Restore power to the heater.
Verify Communication
After the heater reboots, the display should show:
“JANDY REMOTE ONLINE – PUSH MENU TO DISABLE”
- Do not press MENU.
- If the message does not appear, turn the heater off for 2 minutes and restart.
If the unit still does not go online, follow the configuration steps below.
Configure Heater for RS-485 Mode
Press POOL or SPA to exit Service Setup Mode.
Ensure the heater is OFF.
Press and hold MENU, then press and hold POOL and SPA for 5 seconds to enter Service Setup Mode.
Note: The display will return to OFF if no key is pressed for 1 minute.
Use ▲ or ▼ to scroll to REMOTE.
Press MENU — the display will show REMOTE OFF (default).
Use ▲ or ▼ to scroll until RS485 is displayed.
Press MENU to select RS485.
If RS485 does not appear as an option, recheck wiring and power-cycle the heater.
Dry Contact (Heater Port Connections)
Wiring Instructions
- Turn off power to both the heater and The Attendant.
- Locate the POOL / SPA / COM (REMOTE) terminal block inside the heater.
- Connect the Heater Port from The Attendant to the POOL and COM terminals on the heater.
- (Do not use the SPA terminal for dry-contact automation.)
- Tug test all wiring connections to confirm they are secure.
- Restore power to both the heater and The Attendant.
Configure the Heater for Remote TSTAT Mode
- Ensure the heater is OFF.
- Press and hold MENU, then press and hold POOL and SPA for 5 seconds to enter Service Setup Mode.
- Note: The display will return to OFF if no keys are pressed for 1 minute.
- Press MENU again — the display will show REMOTE OFF (default).
- Use ▲ or ▼ to scroll through the options until REMOTE TSTAT is displayed.
- Press MENU to select REMOTE TSTAT.
- Press POOL or SPA to exit Service Setup Mode.
- Press POOL or SPA again and adjust the heater setpoint to 104°F (40°C).